Part: Elica
Part Elica |
Posizione nel menu |
---|
Parte → Crea primitive → Elica |
Ambiente |
Part, OpenSCAD |
Avvio veloce |
Nessuno |
Introdotto nella versione |
- |
Vedere anche |
Part Primitive |
Descrizione
Una Part Elica è una forma parametrica che può essere creata con il comando Part Primitive . Nel sistema di coordinate definito dalla sua proprietà DatiPlacement, l'asse dell'elica corrisponde all'asse Z e il suo punto inferiore, il punto iniziale, si trova sull'asse X.
Utilizzo
Vedere Part Primitive.
Esempio
Qui viene mostrato un oggetto Part Elica creato con l'esempio di scripting riportato di seguito.
Note
- È possibile utilizzare una Part Elica per creare filettature. Vedere il Tutorial sulla filettatura.
Proprietà
Vedere anche: Editor delle proprietà.
Un oggetto Part Elica deriva da un oggetto Funzione Part e ne eredita tutte le proprietà. Ha inoltre le seguenti proprietà aggiuntive:
Dati
Attachment
The object has the same attachment properties as a Part Part2DObject.
Coordinate System
- DatiLocal Coord (
Enumeration
): The handedness, or direction, of the helix:Right-handed
orLeft-handed
. The default isRight-handed
, meaning the helix turns counterclockwise as it goes up.
Helix
- DatiPitch (
Length
): The distance between two consecutive turns of the helix measured along its Z axis. The default is1mm
. - DatiHeight (
Length
): The height of the helix. The default is2mm
. - DatiRadius (
Length
): The start radius of the helix. The helix has a constant radius if DatiAngle is0°
. - DatiSegment Length (
QuantityConstraint
): The number of turns per helix subdivision. The default is1
, meaning each full turn of the helix is a separate segment. Use0
to suppress subdivision. - DatiAngle (
Angle
): The angle that defines of the outer shape of the helix. Valid range:-90° < value < 90°
. The default is0°
. If it is0°
the helix is cylindrical, else it is conical.
Scripting
See also: Autogenerated API documentation, Part scripting and FreeCAD Scripting Basics.
A Part Helix can be created with the addObject()
method of the document:
helix = FreeCAD.ActiveDocument.addObject("Part::Helix", "myHelix")
- Where
"myHelix"
is the name for the object. - The function returns the newly created object.
Example:
import FreeCAD as App
doc = App.activeDocument()
helix = doc.addObject("Part::Helix", "myHelix")
helix.Pitch = 2
helix.Height = 3
helix.Radius = 4
helix.SegmentLength = 21
helix.Angle = 45
helix.Placement = App.Placement(App.Vector(1, 2, 3), App.Rotation(75, 60, 30))
doc.recompute()
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